Rivista di astronomia e scienze affini, 1912, a. 6, n. 06 (June)
An 1912 Italian astronomy periodical issued by the Società astronomica italiana and the Turin Observatory, written for professional and amateur astronomers. Its pages carry technical diagrams: a celestial sphere with a star-field chart, spherical triangles, and projection grids with labelled lines and points, all in plain black linework that a designer could borrow for scientific diagrams.
